Here is a list of places you can look to help you determine when you need to cite something and how!
In the Library: A manual for writers of research papers, theses, and dissertations : Chicago style for students and researchers by Kate Turabian Call No. LB2369 .T8 2007
MLA handbook for writers of research papers Call No. LB2369 .G53 2003
Pocket guide to APA style Call No. BF76.7 .P426 2004
Online: The OWL at Purdue - Guide for writing and citations provided by Purdue University
Citing Sources - Guide for citing sources to avoid plagiarism provided by Duke University